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(11)

EP 3 833 464 A1

(12)

(43) Date of publication: 16.06.2021 Bulletin 2021/24 (21) Application number: 19759192.8 (22) Date of filing: 09.08.2019

(51) International Patent Classification (IPC):  B01D 29/41(2006.01) B01D 29/64(2006.01) B01D 33/21(2006.01) B01D 33/68(2006.01) B01D 29/60(2006.01) B01D 29/86(2006.01) B01D 33/46(2006.01) B01D 33/80(2006.01) (86) International application number: PCT/US2019/045943 (87) International publication number: WO 2020/033854 (13.02.2020 Gazette 2020/07)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA ME Designated Validation States: KH MA MD TN (30) Priority: 10.08.2018 US 201862717126 P (71) Applicant: Kadant Black Clawson LLC Lebanon, OH 45036 (US)	(72) Inventor: DIONNE, Hugues Lebanon, OH 45036 (US) (74) Representative: Hafner & Kohl PartmbB  Schleiermacherstraße 25 90491 Nürnberg 90491 Nürnberg (DE)